Crashlanded on Cybertron while escaping from the merciless conquering army of Nova Prime and Jhiaxus, the Lunars of Moon Beta found themselves in the toxic environment of the Junklands-- a place turned into a poisonous nightmare by millennia of reckless disposal of industrial waste.Able to adapt, the Lunars absorbed all sort of junk, transforming their bodies into forms that could withstand that harsh environment-- and they became the Junkions.Among the piles of garbage of the Junklands, a special section was reserved to Jhiaxus' failed experiments-- such as the corpses of the Cybertronians turned into females.One day the Junkions realized that one of those corpses was not a corpse at all: it took a long time, but they were able to salvage, fix and heal the latest victim of Jhiaxus' perversions.And when she finally came back online, fully restored, Arcee's quest for revenge and identity began!

Although Bruticus was never featured in the Transformers: War Within books, the Gestalts were already a reality for groups such as the Constructicons and the Protectobots. And with four Combaticons whose Cybertronian alt-modes had already appeared in the series, a model sheet for Bruticus was bound to appear sooner or later.